The fastest way to knit yourself a cozy scarf or cowl is to put a few strands of chunky yarn together and arm knit it. It can be tricky at first to knit the stitches back and forth across your arms. But once you get the hang of it, the rows work up almost instantly. I wrote up the pattern, which you can download for free at this link:
I like to use Lion Brand Wool-Ease Thick ‘n Quick yarn for these, but pretty much any super bulky yarn will also work. There are more giant chunky yarns available than ever, so you may also be able to knit a cowl with just one strand.
You can decide if you want to make a single loop cowl that drapes somewhat loosely, or a longer double-loop cowl that stays warm around your neck.
If the PDF instructions aren’t enough to get you knitting, you can also enroll in my Skillshare video class.